How do I count files in a directory using jQuery?

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I\'d like to count the number of files in a folder and return that number to set a variable in a .js file.

Essentially, I have X number of images in a folder. When t

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4条回答

自闭症患者

2020-12-06 16:14

Simple way:

<?php
    $dir = "images";
    $file_count = count(glob("{$dir}/*.*"));
?>
<html>
<head>
<title>Welcome</title>
</head>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){ 

    var dir = <?php echo $dir ?>;
    var file_count = <?php echo $file_count ?>;

    $('#msg').html('File count in folder ' + dir + ' is ' + file_count);
});
</script>
<body>
<div id="msg"></div>
</body>
</html>

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攒了一身酷

2020-12-06 16:21
I would do it like this
```
echo count(glob("{$_GET['dir']}/*.*"));
```
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忘了有多久

2020-12-06 16:22
This is the kind of task PHP is better suited for, keep your Javascript to the client-side. Write a very simple PHP script that counts the files in a folder
```
echo iterator_count(new DirectoryIterator('/home/path/dir'));
```
And call it from your JQuery script.
```
$.get('numberoffiles.php', function(data) {
  alert(data);
});
```
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感情败类

2020-12-06 16:37
If you must use client side and the files are numbered, preload the file and set the number when you get an error
```
...
Img = new Image();
Img.onerror=function() {
  maxImages=cnt-1;
}
Img.src = "image_"+cnt+".jpg";
```
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